Barby pulled her mouth off Mark's prick after swallowing down every delicious drop of his thick cum.
"No wonder every guy at school wants to screw you! You're one hot little whore!" Mark said huskily.
Barby giggled, but then she gasped excitedly as she felt her brother's mouth against her own, kissing her passionately, his lips wriggling over hers, his long tongue prying between her teeth and lapping into her mouth, licking up her saliva and swallowing it lewdly.
His hands ran over her body, sliding from her naked shoulders down over the soft curves of her big tits, squeezing them greedily through the thin cotton fabric of her white sundress.
"Ummmm," Barby moaned into his mouth, feeling the boy's strong palms grazing over her stiff nipples, sending rushes of sensual pleasure through her upper body down into her loins.
He groped for the straps of her dress, drawing them over her shoulders and then, still kissing her with his tongue, and lips, he reached behind her back for the zipper.
He slowly, teasingly, unzipped her dress, drawing it down and sliding his hand inside, against the warm naked flesh of her back.
He drew slightly away from her, his eyes burning with lust, panting hard as he stared down at her body.
"Jeeesus, I've got the sexiest chick in town for my very own sister… this is just the beginning, baby!"
Barby returned her brother's grin. She did find him sexually exciting, and she only hoped that he wouldn't keep her waiting too long before fucking her.
Mark's hands moved around in front and he hooked his fingers into the top of her flimsy dress, tugging it down over the full jutting mounds of her tits.
His breath caught in his throat as he got his first thrilling glimpse of the girl's naked tits. They sprang free, jiggling obscenely and temptingly.
Mark groaned as he reached out, eagerly dosing his strong hands around her throbbing tit jugs, kneading and caressing them. He scraped his thumbs over her rosy nips.
"Ohhh, yeah, that's nice," Barby breathed. "Great tits, really great! Just like the other guys on the football team said! They sure weren't lying!"
Barby didn't much care for the idea that her brother's friends all talked about her that way, and she found herself wondering what kind of brother would get off on that kind of talk instead of protecting her from such lewd comments. He should defend me in front of them, she thought firmly, and then he could come to me and fuck the holy shit out of me!
But all such thoughts flew right out of her mind as she felt the exquisite thrill of Mark's lips wetly moving over her neck. He kissed and sucked the tender flesh of her neck and shoulders before moving down, planting hot, wet, hungry kisses on the sloping ridges of her tits.
And, all the while, he kneaded and squeezed them, lifting them up high and lashing his tongue out to lick and wash on each rosy nip in turn.
"Yessss! Suck my tits, Mark, suck them hard!" the girl cried, pulling his head down tighter against her tit-mounds.
The teen clamped his hungry lips around each nipple, his cheeks hollowing as he created an erotic vacuum in his mouth, slurping and milking on the pulsing flubs.
"Mmmmmm, yessss, Mark, yessss, that's soooooo nice! Yeah, suck my tits hard!" Barby moaned, leaning back in the car seat and gasping loudly as her brother's hot, wet mouth worked over her, tender, aching tits.
She ran her fingers through the boy's hair, gripping the nape of his bullish neck as he continued to suck and lick her tits. At the same time, he ran his hands down to her waist where her dress was bunched, and he tugged at it impatiently.
Moaning with sexual excitement, Barby shifted up on the seat and let her horny brother draw her dress down about her knees. It fluttered down to her ankles, and she groaned excitedly as she let the boy see her naked body for the first time.
Mark lifted his head from between her tits and stared down with glittering eyes at the sight of the beautiful girl's naked body.
"Oh, baby!" he muttered huskily, drinking in the sight of Barby's gently sloping hips and the "V" shaped triangle of pussy hair tucked in between them.
He licked his lips hungrily as he stared down at the sparse pussy fuzz at the crest of her mound, and his mouth began to water.
"Let's get out of the fuckin' car, baby! We need more room!" he said impatiently.
He shoved the door open and scrambled out. He stood there by the car, wearing only his tank top and his shoes, which he kicked off now.
His rock-hard prick thrust upward at an obscene angle, throbbing visibly. He reached for Barby's hand and helped her out of the car.
The young girl stood there, shivering slightly, naked and beautiful, her long golden hair streaming down her back.
Mark stood there for a minute or two, greedily gazing at her. Then he reached into the back seat of the car and pulled a blanket out.
"Come on, baby," he said gruffly, sliding a strong arm around her waist and leading her toward the trees that surrounded the lake.
They stopped in a clearing with soft, springy grass on the ground and the trees that encircled it gave them complete privacy.
The boy spread the blanket out on the ground and dropped down on his knees on top of it.
Barby stood there watching him, her heart racing with sensual excitement, loving the way the boy looked with his now-naked body, and loving the way his huge cock bobbed and jerked in the air.
"Come here, baby," Mark said hoarsely and she walked toward him onto the blanket until she was standing right in front of the crouching teenager.
He stared up at her with lust-glazed eyes and reached up to her, his hands around her slender waist, running them up and down her hips and thighs, caressing and squeezing her as he leered at the sight of her little wet pussy.
With a husky groan, he leaned forward until his face was just inches away from the soft mound of her moist cunt. His nostrils flared out as he sniffed her pussy, savoring its feminine, aroused scent, his cock twitching with desire.
His fingers moved softly across her thighs and he gently pinched them around the puckered outer folds of her sweet-looking cunt.
"Oh, yes!" she gasped hoarsely as her brother gently peeled back her pussylips, revealing the glistening inner meat of her moist fuckhole.
Mark gave a husky grunt and mashed his face eagerly and wantonly between the girl's legs, smothering his lips and nose into her little wet pussy.
Barby shrieked in joy as she felt his hot, sucking mouth closing demandingly about her pussy, and his long tongue beginning to lewdly snake up and down in sweeping licking motions, slurping at her pussyslit, swallowing down her tasty cunt juice.
Mark Williams growled like a wild animal as he licked and sucked her juicy cunt, pushing his tongue deeply into her little fuck hole and wiggling it around, testing its tightness and heat, his cock jerking more and more.
"Unnhhh, yeas," the girl moaned, automatically tightening her skillful pussy muscles about his invading tongue, holding it in place for long breathless moments.
As the boy tongue-fucked his sister's pussy, his law muscles working hard, he had to wonder how the whorish girl managed to have such a tight little cunt with all the fucking she did.
His hands ran around her ass, and he dug his fingers into the high mounds, squeezing them hard.
"Aaarghhh, good, good," Barby babbled, throwing her head back and surrendering herself to the sweet, incestuous pleasure that raced through her loins.
Mark's eagerly fucking tongue moved in and out of her cunthole over and over again. Then he withdrew his tongue and used it to seek out the little throbbing nub of her clit. He began to strum it hard, drawing the tip of his tongue over the slick bud with rapid movements.
"Ahhhh! Ohhhh! Yessss! Gawwwddd!" Barby screeched, making the birds take flight from the nearby trees.
She sobbed with ecstasy, tossing her long, blonde hair violently from side to side, her beautiful face contorted with lust as blazing flashes of pleasure and lust cut through her crotch.
She reached down now, running her fingers through the boy's hair, gripping him frantically, wiggling her hips and pushing up against his face as he ate her out with wanton abandon.
Her heart was thumping wildly now, and her blood felt as though it were on fire as it raced through her veins and made her little pussy swell up even more. Her cunt felt hotter, and wetter, than ever before. And when Mark's tongue moved around inside her cunthole, or when he used it to stroke her rigid clit, she felt as if she had just stuck a finger into an electric socket, so strong were the carnal sensations that made every single nerve ending in her body vibrate and burn.
Over and over again, the boy fucked the entire length of his tongue in and out of the girl's clasping pussyhole, groaning into her wide-open cunt as his cock grew harder and thicker.
"Commmiiinnggg!" Barby cried after a few more minutes, and her pussy spumed convulsively against the boy's face as she came.
As her orgasm ebbed, Mark sat back on his haunches, parting and staring up at his sister with eyes that burned into hers.
The lower part of his face was wet and dripping with her girl-cum and he licked his lips.
"Come on down here by me baby," he said, reaching up and pulling the girl down next to him.
He wanted to fuck her belly. But he sensed that she needed a few minutes to fully recover from the powerful orgasm she had just enjoyed. He threw his arms around her, cuddling her closely against his strong muscular body.
"Mark," Barby murmured, still breathing hard as she lay in her brother's arms.
"Huh?"
"Remember when Uncle Bill, Aunt Ruby, and our cousin Rosie came to visit us a couple of mouths ago?" Barby asked.
"Yeah, sure. I remember." Mark muttered, wondering what his sister was getting at. He we stroking her tub now, rubbing the girl's rosy nipples between his thumbs and forefingers.
"Well, did you notice the way that Mom and Dad kind it gave them the bum rush? I mean, they hadn't come to visit us in ages, and yet Mom and Dad acted as if they didn't want them there, and they couldn't wait to get rid of them."
"But we're all family!" Barby protested as she felt her nipples growing stiff again beneath the lewd pinching caresses her brother was giving them.
"So what? A lot of families aren't close! Look at the Ewings on 'Dallas'," Mark said with a laugh.
But Barby didn't respond with a laugh of her own. She was too busy thinking about the strained relations in her family.
"Besides," Mark continued, "you said yourself you don't feel at all close to Mom and Dad, so why should you give any thought to the fact that we're not all that close to Uncle Bill and his family?" Mark hoped that his sister would stop talking soon so he could fuck her.
"But that's just it!" Barby cried, turning to look into the boy's eyes with an obvious need to be completely understood. "It's not that all of us aren't close to Uncle Bill and his family. I always feel very close to him and Aunt Ruby and Rosie. Even when I don't see them for a couple of years! I can't really explain it any better than that, Mark. All I know is that I feel much, much closer to them than I do to my own family!"
"If you feel that way, why don't you go live with them?" Mark snarled, offended by his sister's remark.
"I'd love to! But Mom and Dad won't even let me visit them, let alone live with them!" she cried.
Mark drew back slightly and looked into the girl's flushed face. He saw that she was one hundred percent serious, that she would actually rather live with their uncle's family than with her own. He didn't know what to say to her. He suddenly felt as if he didn't know his own sister at all.
"You nutty chick," he said a few minutes later, pulling her close to him again. "I want to fuck you. I want to feel my cock up that sweet little pussy! So what do you say we quit gabbing and start fucking?"
"I'm all for that!" Barby said eagerly.
Gently, but firmly, the boy pressed her down on her back on the blanket, rolling his big brawny body on top of her.
Barby sighed with pleasure, feeling the boy's muscular body pressing deliciously down on her, her aching tits flattened out by his muscular chest.
Barby felt the long, throbbing meat of her brother's prick sandwiched between their bellies, and a flutter of incestuous lust fanned through her loins.
"Ohhh, yesss, fuck me, darling, fuck me hard! I want to feel you inside of me! I want to feel your huge cock up my pussy! Fuck me, fuck me, fuck me!"